Line-spacing mechanism for typewriting machines



E, B. HESS AND L. c. MYERS. LINE SPACING MECHANISW FOR TYPEWRITING NlACHiNE-S APPLiCATION FiLED MAYZT. I921.

Patenei Hazy 3% Z SHEETS-SHEET i r Ed areZ B. iffess J Lswis (L j' E. B. HES SV AND-L. c. MYERS I LINE SPACING MECHANISM FOR TYPEWRITING MACHINES.

' iWITcATmN FILED MAY 21. 1921. 41%907, Patented 1813x3 30, 192' 2 SHEETSSHEET 2.

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ED\VARD BERhTARD HESS AND LEW/'15 CARY MYERS. 3F BROOKLYN, NEW

ASSIGNORS TO ROYAL TYPEWBITER CGMIANY. I

NC" OF 1L3??? YORK, N. Y.

MACHINES.

Be it known thulwe. llmvxiun lmuxAun lluss :uul luuvis (Aim Illriaus. lmlh ('iilxens 01' the United l'liul'es residing n llruuklvxn ennui-y 0| Kings eihv uiul Hlule of New York. have invented eeriuin new uiui usel'ul lnipruveiueuls in lline-Hpuriug i llil'lllllllHlll l'nr 'l e\vriliug illumines, ni' \vhirh the 'l'nilowiug is u spel'iiiculion.

The upplirulinn 1 m lhis pulenl is u livisinn (if our uppliruiiuu for palm? iileil Jun. l3 H321. x0. lillij llu The ohjw-l nl' (his iuvr iiinn is in proviile imprnveii meehuuisin for turning 02 zuljusllug lhe pluien l'nr eilher single 0r lnul le spin-e lll ll printing. :llHl \vhiel: is llHt-()(llli0il with means for returning lhe rurriuge in slum-ling pusiliuu ulul for preventing overlhrmv oi" lhe pluieu \vhile'heiug sel.

l'lllll f lo lhis iurenliou the plu'leu l urneil liu' line sparring h u lever \vhirh prujeels l'uruurlllv to u rmisiileruhle extent i'riuu lhe platen s0 us in he \vilhiu ens reueh nl the operator when :u-luul'iug the platen i'nr line sparing .iul for returning the eurriugeln slurl'ing'pnsiliuu. The lever uperul'es :1 pawl \vhieh engg'uges u ruirhel wheel serureil lo the lel'l-huuil ("illl 01' the plulen. ()verl hrmv ui' lhe plulen is prevenl'wl h u (lelent 'ivhieh engages lhe rulehel' wheel uiul \vhieh is provided with an operating luvv lvv means 01' which it niuy he releuseil from 'lhe. rail-chefs Wheel, when (lQHil'ill. in order in turn the platen i'ur either single spuee m {louhle spin-e line printing, Wu enipln v u lever projecting z'euru-urrll'y from the pluleu shaft zuul carrying an nrru hzn'ihg z: enrveil member adapted in engug'e :1 pin curried lrv the pawl. l ly operating this lever the toothed enil ol the puwl may he raised and lowered in sueh munner us {'0 engage the next tooth on the ruhrhel; wheel 01' h) pi -ts over :1. tooth and engugge lthe seuuuvl tuoth: i. 8., the pawl may he, operufifieri to elfeei eiiher single orwlonhl'e space line priming; The lever may hi; set in either u an den": and held hy improveifl locking devious.

In the uccnmpunying diunin Figure 1 shows :1 top plan f i ii prim 0 a typewriting machine platen with uni in gn'ovecl line spacing devices applied.

Specification of Letters Patent.

llnienledl Mary 3% Divilecl and this application filed 44.19.3 .169.

Figure 9 shows an end View of the mechanism with the plu'lieii shul't in section.

Figure 3 is :1 view similar to Fig. 2 with the parts in :1 differentposition. i 5

Figure 2 shows khe parts set for single line running, and after the line 5} use lever has been nu veil suilieiently lo'hring the pawl into engagement will) {he ruijel eh while Figure 3 shows ihe parts set for double line 00 spilling and in rim-11ml posi'iion.

Figure l is :1 view 0! the uleehuniun looking hm'urils the le'l'i hurul end (if the n1u- (*illlli. i

pnrlitm of {he pluten is inilieuieil at A. a; u iirlieziies the giluten shaft znul 0 one 01'' its A lever l, is pivoted uli 7) in a hrnekut- C on 'l'he leit-luuul Slilfi plate l) n! the marriage. The lever prujeeis l'orwazrrlly tn :1 ennsirleruhle e'xleut fl-(in: the platen, its encl b heing within easy reueh in the operuhn: 'lhe lever serves 110?; only to operate lhe linesparing devices but also to return the can riuge lo slur-ling position. k'luiil lever swings uhuul u vertieul uxis liniilri hr :1 (luv-xii .vuriilv ex nlling ni'in which e1 urges the rear Lllll i he hrueliei' 1 m! which the lever is pin/led An min Zr" 0? the lever ll engugies Ell'l 'upwurally examining arm of a lever 8 ll. m-uuuleu to turn on :1 sleeve :9. seeured in lhe sirle plate D. The lever is pulled in (me ilireel inn by {1 spring 0, applied to its lower erul.

i he lev r l l rnrries pawl lmluplml to 8 eng'zu 'e u. ruin-he; wheel seem-el fastened to ;he le'il-hanil end of lhe platen. The pun" is drawn downwards l mvurils the l sum: wheel lay n :cnileri spring 1/ and the upward movement of the pawl is limited lav H) a stop g cmieil by ihe upper and of the lever l). a hen the lever .zinoved ilron'i in right 1%; swings the lever ll; rear- L The? a lain ihe ilesirea V causing by an adjustable en the left-hand fivert li'nw 0 a eieiien'l; l. Wnch on its under side. This (letent is pivoted at i to the adjacent. e plate D and it has an arm 11 to which is connected a coiled spring J which normally holds the detent in engagement with the ratchet wheel with a :Ylfildllflg pressin'e. lln this way overtlmm of tie platen i nile being turned {or spacing; is avoided and the platen is a normally held. against inoven'ient exctn when positively actual-ed.

VJ hen desired, the cletent ane he with drawn from the ratchet for iii'aetiona ing; by a lever l' i having a finger-i within convenient reach of the operator and which is pivoted at 7:: to ill'levl lilllli in rear ot which pivot it has a cannned extension is adapted to ally from t be lower end of the detent lever. W hen the finger-piece 1S pushed in the ex- I l i L tension is engages the pin L antlvthe cletent is Withdrawn.

lileans is provided whereby the platen may he turned for either single space or double space line printii this one pose we employ a lever in extending rearwardly from the shouldered nut on the sleeve (5 and careving an arm iii having a forwardly extending curved men'ihei or pawl-lifting; device 5 auaiten to engage a, in il e? .Ldii worn the f twl F. 5 tin'nii'ig; linlu iied end of the pawl may be 1. wet-ell and in i manner as to an the next wheel m m pass over a tooth the seeond tnoth or the di od he pawl may he operated to or double space printing.

i nan l et in either position ny a inn m on its side a pin L pro ecting later-- tooth on.

Lemme? which is adapted to ei'lgage an indentation n in the Side plate ll ot the carriage or a similar properly located indentation.

These devices in avtual pravtice have been proved to he most ellicient. The cauhe economirally llldlllllill'illllll and easily aseenihlod.

ll e claim as our invention I-- 1. in a typem'iting; machine, a platen, a fran'ie in which it is; mounted, a ratchet wheel secured to the platen, a pawl adapted to engage the wheel, a lever adapted to move about the axis of the platen a lever for swinging said lever to eanse the pawl to engage the ratchet and turn the platen, an adjustable stop for limiting the rearward movement of the pawl, a pin on the pawl, and a lever having; an arm adapted to engage the pin to hold the pawl in proper position to engage the desired tooth of the ratchet wheel.

In a typewriting; machine, a platen, a frame in whi.ch it is mounted, a ratchet wheel secured to the platen, a pawl adapted .to engage the wheel, a lever adapted to move about the axis oi? the platen, a lever for swinging said lever to cause the pawl to en- ;gage the ratchet and turn the platen, a pin on the 'iawl, and a lever having), an arm adapted. to engage the pin. to hold the pawl in proper poeition to engage the desired tooth of the ratchet wheel, said last-mentioned lever licing held in plane by lllllS and dents in the lever and in the carriage i'raine.

llu testimony whereof, we have hereunto sul gcrihed our names.

nnnmnn HESS. inn 

